Combined lug cap and liner plate



,Aprii 27 1926.

- 1,582,682 C. HAMMER COMBINED LUG CAP AND LINER PLATE Filed August 22, 1925 Patepted Apr. 27, 1926.

\UNITED' STATES 1,582,682- PATELNT OFFICE.

CHARLES HAMMER, OF HOLLIS COURT BOULEVARD, NEW YO RK.

COMBIIlED LUG CAP AND LINER PLATE.

Application filed August 22, 1925. SerialNo. 51,728.

To all whom it may concern:

Be it known that I, CHARLES HAMMER, a citizen of the United States, residing at Hollis Court Boulevard, in the county of Queens and State of New York, have invented certain new and useful Improvements in Combined Lug Caps and Liner Plates, of which the following is aspecification. r a V This invention relates to a combined cap or closure and sealing member or liner plate for containers, such as glass containers, the primary object of the invention being to provide a combined cap or closure .and improved self-centering re-usable liner plate therefor, so constructed that a material saving in the metal of the liner plate and the material of the gasket is obtained, and which will be properly retained in the cap against premature separation therefrom during the application of the cap to the container, and which will eflectively permit the release of the liner plate from the container when the same is vacuum-sealed without the mutilation or injury ofthe liner plate or its gasket, so that the same can be readily re-used, and which is also so constructed as to properly center itself on the container.

A further object of the invention is the provision of an improved metal sealing member or liner plate, particularly apolicable for use with rotary metal caps havmg inwardly extending lugs or pro ections and which can be instantly released from the container without injury or destruction of the, gasket on the removal of the cap.

In practice, the closure or cap has to be made of a diameter which will permit the depending fiange or skirt thereof to overlap the projections or threads on the container. In other words,- the diameter of the skirt of the cap has to be suifioiently large to permit this skirt to pass over the projections or threads of the container. To make the liner plate of this diameter means the loss 'of a considerable amount of material or a self-centering liner plate which may be made of considerably less diameter than that a of the cap skirt but which nevertheless will be maintained in position during the appllcation of the cap to the container by the holding lugs or projections of the cap, and

gasket from the container.

which thus enables a comparatively narrow thin gasket to be used, so that there is a mater al savmg 1n the quantity of gasket material, and which can be easily released from the container without injury or destruction of the gasket, so that the liner plate can be efi'ectivel re-used, and which moreover will permit t e cap to be readily rotated into place or released without interfering with the position of the liner plate, and its gasket, relative to the sealingsurface of the container.

In the drawings accompanying and formmg a part of this specification, Fi 1 illustrates one form of rotary cap partiy in section which may be used together with the 1m proved liner plate or sealing member applied to a glass container; Fig. 2 is an enlarged detail view of the cap and sealing member shown in Fig. 1; Fig. 3 is a perspective view of this improved liner plate or sealing member; and Fig. 4 illustrates the liner plate in position on a lass container after removal of the cap, 1: e dotted lines illustrating the mannerin which an instrument, such as a knife blade, ma be readily inserted at the lower edge 0 the skirt of the liner plate, so as to release the Similar characters of reference indicate corresponding parts in the several views. Before explaining in detail the present lmprovement and mode of operation thereof, I desire to have it understood that the invention is not limited to the details of construction and arrangement of parts which are illustrated in the accompanying drawings, since the invention is capable of other embodiments, and that the phraseolo y WhlCh I employ is for the purpose of escription and not of limitation.

The cap or closure in the form shown, is what is now commonly known in the trade as an Amerseal cap, it comprisin ,a top 2 having a dependin flange 3 provi ed with a curled or strengt ened or beaded lower edge 4 commonly termed a wire edge, and which skirt has suitable knurls or corrugations 5, the curled edge being provided with lugs or projections 6 adapted to engage suitable pro ections or threads 7 of a glass container when the cap is rotated on to the container.

The liner plate ma be used, however, with a ring formed cap in which casethe liner plate itself would form the top of the cap.

a fiat ring gasket 11, which gasket is relatively narrow and comparatwely thin. Tl'llS liner plate is provided with a depending flange 12 of shallow formation, it being but little deeper than the thlckness of the gasket, which as stated, is com aratively thin and narrow, and this flange ares outwardly, the lower edge 12- of this liner plate flange 12 having a diameter reater than the diameter between the lugs 0 the cap whereby, when the cap is in position to be appl ed to a container, the lower edge 12 ofthis outwardly flaring flan e 12 will rest upon the lugs of the cap an thus be prevented from falling out of the cap during the application of the cap to the container.

The top of this flarin flange however, as at 12 has a diameter no greater and usually less than the diameter between the lugs, whereby a considerable quantity of metal is saved in the manufacture of these caps, since the top of the liner plate may be made of materially less diameter than the 1nter1or diameter of the cap skirt, and the lower edge of the flange of the liner plate need only be made of suflicient diameter to have it rest upon the lugs of the cap and prevent its premature displacement.

By an inspection of Flg. 2 1t Wlll. be seen that the skirt or flange of the cap at 13 must have a diameter sufliciently large to overlap the threads 7 of the glass container, and consequently if the liner plate 1 s of this size, a greater quantity .of matenal must be used in the manufacture of each plate so that in the manufacture of millions of these plates, there is a great loss of material,

not only in theimetal of the liner plate, but in the gasket material which has to be used, since the gasket has tobe wider as the outer. edge has to engage the flange of the liner plate, while the inner ortion thereof has to rest upon the top 0 the container, but by flaring the depending flange of the llner plate outwardly as shown in Fig. 2, in which the depending flange has a cylindrical portion for the reception of the asket and below the gasket an outwardly aring .portion, the top of the liner plate need only be made of a diameter suflicient to corre sgond with the top of the container while liner plate during the a lication of the cap to the container should fall therefrom, a great loss of time would result in the operator picking up the plates and replacing them in the cap. Furthermore, by makin the depending flange of the liner plate 0 shallow formation and but slightly deeper than the thickness of the gasket or rin fitting therein, a knife blade can be rea ily inserted after the removal of the cap or closure from the container between the lower edge of the liner plate and the top of the container to permit the access of air and thus release the vacuum and so permit the ready removal of the liner plate from the container.

Thus, the construction of the present improved liner plate accomplishes several in1- portant objects: It rmits a knife blade to be readily inserted bztween the flaring portion of tie flange and the container and by using the container thread as a fulcrum the gasket can be easily pried sufiicieptly to rolease the vacuum and permit its ready removal; it prevents the premature displacement of the liner plate in the cap; the shallow depending flange facilitates the centering of the liner plate onthe mouth of the jar or container, since the flange extends slightly below the gasket, especially where the containers are not true to form, but are slightly oval, whereas if the flange of the liner plate were straight and made of considerably less diameter than the cap, the result would be that the lower edge of the flange of the liner plate would strike the top of the container mouth, but by the flared construction of the liner plate, the flange of the liner plate,-even though the container should be slightly oval in form, in other words out of true, will pass over the outer wall of the mouth of the container, and thus center the liner plate, so that this flared construction of the liner plate flange enables the liner plate to be made much smaller in diameter, yet without interfering with the centering of the liner plate on the container, even though the latter may not be true to form; it saves a material amount of metal in the formation of the liner plate and a material amount of gasket material,

since the latter can be made of considerably less width as well as somewhat thinner.

In consequence, the present improved construction of liner plate having the shallow flaring depending flange conserves the amount of metal required in the formation thereof, and in the amount of gasket material, insures the proper centering of the liner plate upon the container regardless of whether the container is true to form or not, and prevents the premature separation of the liner plate from the cap during the bandling thereof, while at the same time permitting the eflective use of a suitable instrument to release its sealing contact with the container mouth edge.

It is to be understood that by describing in detail herein any particular form, structure or arrangement, it is not intended to limit the invention beyond the terms of the several claims or the requirements of the prior art.

Having thus explained the nature of my said invention and described a way of constructing and using the same, although without attemptingto set forth all of the forms in which it ma be made, or all the modes of its use, I c aim:

1. A combined cap and liner plate, eac having a depending flange, the flange of the cap having inwardly extending lugs or projections for securing it on to a container, a

gasket carried by said liner plate, the flange of the liner plate having a depth slightly in excess of the thickness of the gasket and flaring outwardly so that the diameter there of at its lower edge is greater than that between the lugs of the cap.

2. A combined cap and liner plate, each having a dependin flange, the flange of the cap having inward y extending lugs or projections for securing it on to a container, a gasket carried by said plate, the flan e of the liner plate having a depth slight y in excess of the thickness of the ,gasket and flaring outwardly, the diameter of said flaring flange at the top of the plate being no greater than that between the cap lugs, and the diameter of the lower edge of the flaring flange being greater than that between.

flange and the container is readily eflt'ected.-

to release the liner plate the diameter of said flaring flange at the top of the plate being no greater than that between the cap lugs, and the diameter of the lower edge of ,r

the flarin flange being reater than that between t e cap lugs, whereby the liner plate will be prevented from premature separation from its cap.

Signed at Brooklyn, New York this 31st day of July 1925.

, CHARLES HAMMER. 

